From patchwork Thu Feb 4 17:22:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Garzarella X-Patchwork-Id: 12068107 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A009EC433E9 for ; Thu, 4 Feb 2021 17:47:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6893164DF2 for ; Thu, 4 Feb 2021 17:47:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238678AbhBDRrH (ORCPT ); Thu, 4 Feb 2021 12:47:07 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:58353 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238156AbhBDRZB (ORCPT ); Thu, 4 Feb 2021 12:25:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612459409; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=hgTkIqcV2QARSGi+NWdgeQuWmRUNa3RAFDdhKKRVfbE=; b=hHyvaAg9OU/0wCccSi1db5xgk6FkofDpKY3/NjdD5tvvgd/OoNzuOzbnUlIPl5tAFY3tv/ WOvU8qSH0S970i+Ij6szeTMk3Y/ohW2jnTSV5zq+kP3tTHM7VtTbsW8nJGLZpP9q6jPfVt eEw0OpgWOVcGfJ9D/1Z4NH6az371uOE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-397-b_CJKPpVNRetDV9O_mSYRg-1; Thu, 04 Feb 2021 12:23:25 -0500 X-MC-Unique: b_CJKPpVNRetDV9O_mSYRg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4B8F81800D41; Thu, 4 Feb 2021 17:23:24 +0000 (UTC) Received: from steredhat.redhat.com (ovpn-113-213.ams2.redhat.com [10.36.113.213]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2BEB160937; Thu, 4 Feb 2021 17:23:22 +0000 (UTC) From: Stefano Garzarella To: virtualization@lists.linux-foundation.org Cc: Stefano Garzarella , Xie Yongji , kvm@vger.kernel.org, Laurent Vivier , Stefan Hajnoczi , Max Gurtovoy , linux-kernel@vger.kernel.org, Jason Wang , "Michael S. Tsirkin" Subject: [PATCH v3 07/13] vdpa_sim: cleanup kiovs in vdpasim_free() Date: Thu, 4 Feb 2021 18:22:24 +0100 Message-Id: <20210204172230.85853-8-sgarzare@redhat.com> In-Reply-To: <20210204172230.85853-1-sgarzare@redhat.com> References: <20210204172230.85853-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org vringh_getdesc_iotlb() allocates memory to store the kvec, that is freed with vringh_kiov_cleanup(). vringh_getdesc_iotlb() is able to reuse a kvec previously allocated, so in order to avoid to allocate the kvec for each request, we are not calling vringh_kiov_cleanup() when we finished to handle a request, but we should call it when we free the entire device. Acked-by: Jason Wang Signed-off-by: Stefano Garzarella --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 53238989713d..a7aeb5d01c3e 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -562,8 +562,15 @@ static int vdpasim_dma_unmap(struct vdpa_device *vdpa, u64 iova, u64 size) static void vdpasim_free(struct vdpa_device *vdpa) { struct vdpasim *vdpasim = vdpa_to_sim(vdpa); + int i; cancel_work_sync(&vdpasim->work); + + for (i = 0; i < vdpasim->dev_attr.nvqs; i++) { + vringh_kiov_cleanup(&vdpasim->vqs[i].out_iov); + vringh_kiov_cleanup(&vdpasim->vqs[i].in_iov); + } + put_iova_domain(&vdpasim->iova); iova_cache_put(); kvfree(vdpasim->buffer);